Crane Operator Certification Exam Prep · Question
Upon completing a significant increase in a tower crane's free-standing height, what critical inspection and re-commissioning step must be performed before the crane is put back into service, as per CSA Z248?
After a significant increase in free-standing height without tie-ins, it is crucial to re-level the crane base foundation. This ensures the mast remains plumb a
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Question: Upon completing a significant increase in a tower crane's free-standing height, what critical inspection and re-commissioning step must be performed before the crane is put back into service, as per CSA Z248?
Answer options: ✅ A full re-leveling of the crane's base foundation to ensure plumbness and stability.
- A complete lubrication of all hoist ropes and reeve inspection.
- Recalibration of the anemometer and wind speed indicators.
- Installation of additional counterweights to compensate for the higher centre of gravity.
Correct answer: A full re-leveling of the crane's base foundation to ensure plumbness and stability.
Explanation: After a significant increase in free-standing height without tie-ins, it is crucial to re-level the crane base foundation. This ensures the mast remains plumb and the crane's stability calculations are valid, preventing excessive eccentric loading on the foundation or mast structural members, as required by CSA Z248.
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Question explanations
- According to most Canadian provincial regulations, who is ultimately responsible for the safe operation of a c
- A crane's rated capacity decreases as the load radius:
- What is the minimum number of full wraps of wire rope that must remain on a hoist drum when the hook is in its
- Before setting up a mobile crane, what is the most important factor to assess regarding ground conditions?
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